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hush: fix ${##}, ${#?}, ${#!} handling

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function                                             old     new   delta
parse_dollar                                         786     820     +34
expand_one_var                                      1579    1592     +13
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 47/0)               Total: 47 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2017-07-26 00:07:27 +02:00
parent 1e3e2ccd5d
commit 2093ad296f
7 changed files with 106 additions and 9 deletions
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31
shell/hush_test/hush-vars/param_expand_len1.tests Executable file
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@@ -0,0 +1,31 @@
# ${#c} for any single char c means "length of $c", including all special vars
false
echo One:${#?}
(exit 10)
echo Two:${#?}
(exit 100)
echo Three:${#?}
echo
echo One:${##}
set -- 1 2 3 4 5 6 7 8 9 0
echo Two:${##}
set -- 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 \
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 \
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 \
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
echo Three:${##}
echo
v=$$
test "${#v}" = "${#$}"
echo 'Ok ${#$}:' $?
echo
sleep 0 &
v=$!
test "${#v}" = "${#!}"
echo 'Ok ${#!}:' $?
# TODO: ${#-} ${#_}